[PATCH] Return -EIO when xfs_vn_getattr() failed

[PATCH] Return -EIO when xfs_vn_getattr() failed

[Mitsuo Hayasaka]

An attribute of inode can be fetched via xfs_vn_getattr() in XFS.
Currently it returns EIO, not negative value, when it failed.
As a result, the system call returns not negative value even though
an error occured. The stat(2), ls and mv commands cannot handle this
error and do not work correctly.

This patch fixes this bug, and returns -EIO, not EIO when an error
is detected in xfs_vn_getattr().

Signed-off-by: Mitsuo Hayasaka <mitsuo.hayasaka.hu@hitachi.com>
Cc: Alex Elder <aelder@sgi.com>
Cc: Christoph Hellwig <hch@infradead.org>
---

 fs/xfs/xfs_iops.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/fs/xfs/xfs_iops.c b/fs/xfs/xfs_iops.c
index b9c172b..33136d6 100644
--- a/fs/xfs/xfs_iops.c
+++ b/fs/xfs/xfs_iops.c
@@ -457,7 +457,7 @@ xfs_vn_getattr(
 	trace_xfs_getattr(ip);
 
 	if (XFS_FORCED_SHUTDOWN(mp))
-		return XFS_ERROR(EIO);
+		return -XFS_ERROR(EIO);
 
 	stat->size = XFS_ISIZE(ip);
 	stat->dev = inode->i_sb->s_dev;

Re: [PATCH] Return -EIO when xfs_vn_getattr() failed

[Christoph Hellwig]

On Sat, Sep 17, 2011 at 10:38:38PM +0900, Mitsuo Hayasaka wrote:
> An attribute of inode can be fetched via xfs_vn_getattr() in XFS.
> Currently it returns EIO, not negative value, when it failed.
> As a result, the system call returns not negative value even though
> an error occured. The stat(2), ls and mv commands cannot handle this
> error and do not work correctly.
> 
> This patch fixes this bug, and returns -EIO, not EIO when an error
> is detected in xfs_vn_getattr().

Indeed.  Looks good,


Reviewed-by: Christoph Hellwig <hch@lst.de>

Re: [PATCH] Return -EIO when xfs_vn_getattr() failed

[Alex Elder]

On Sat, 2011-09-17 at 22:38 +0900, Mitsuo Hayasaka wrote:
> An attribute of inode can be fetched via xfs_vn_getattr() in XFS.
> Currently it returns EIO, not negative value, when it failed.
> As a result, the system call returns not negative value even though
> an error occured. The stat(2), ls and mv commands cannot handle this
> error and do not work correctly.
> 
> This patch fixes this bug, and returns -EIO, not EIO when an error
> is detected in xfs_vn_getattr().
> 
> Signed-off-by: Mitsuo Hayasaka <mitsuo.hayasaka.hu@hitachi.com>
> Cc: Alex Elder <aelder@sgi.com>
> Cc: Christoph Hellwig <hch@infradead.org>

Looks good.

Reviewed-by: Alex Elder <aelder@sgi.com>